1 files changed, 114 insertions, 0 deletions
diff --git a/xorg-server/present/present_notify.c b/xorg-server/present/present_notify.c
new file mode 100644
index 000000000..e272e08dc
--- /dev/null
+++ b/xorg-server/present/present_notify.c
@@ -0,0 +1,114 @@
+/*
+ * Copyright © 2013 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that copyright
+ * notice and this permission notice appear in supporting documentation, and
+ * that the name of the copyright holders not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  The copyright holders make no representations
+ * about the suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+ * OF THIS SOFTWARE.
+ */
+
+#ifdef HAVE_XORG_CONFIG_H
+#include <xorg-config.h>
+#endif
+
+#include "present_priv.h"
+
+/*
+ * Mark all pending notifies for 'window' as invalid when
+ * the window is destroyed
+ */
+
+void
+present_clear_window_notifies(WindowPtr window)
+{
+    present_notify_ptr          notify;
+    present_window_priv_ptr     window_priv = present_window_priv(window);
+
+    if (!window_priv)
+        return;
+
+    xorg_list_for_each_entry(notify, &window_priv->notifies, window_list) {
+        notify->window = NULL;
+    }
+}
+
+/*
+ * 'notify' is being freed; remove it from the window's notify list
+ */
+
+void
+present_free_window_notify(present_notify_ptr notify)
+{
+    xorg_list_del(&notify->window_list);
+}
+
+/*
+ * 'notify' is new; add it to the specified window
+ */
+
+int
+present_add_window_notify(present_notify_ptr notify)
+{
+    WindowPtr                   window = notify->window;
+    present_window_priv_ptr     window_priv = present_get_window_priv(window, TRUE);
+
+    if (!window_priv)
+        return BadAlloc;
+
+    xorg_list_add(&notify->window_list, &window_priv->notifies);
+    return Success;
+}
+
+int
+present_create_notifies(ClientPtr client, int num_notifies, xPresentNotify *x_notifies, present_notify_ptr *p_notifies)
+{
+    present_notify_ptr  notifies;
+    int                 i;
+    int                 added = 0;
+    int                 status;
+
+    notifies = calloc (num_notifies, sizeof (present_notify_rec));
+    if (!notifies)
+        return BadAlloc;
+
+    for (i = 0; i < num_notifies; i++) {
+        status = dixLookupWindow(&notifies[i].window, x_notifies[i].window, client, DixGetAttrAccess);
+        if (status != Success)
+            goto bail;
+
+        notifies[i].serial = x_notifies[i].serial;
+        status = present_add_window_notify(&notifies[i]);
+        if (status != Success)
+            goto bail;
+
+        added = i;
+    }
+    return Success;
+
+bail:
+    present_destroy_notifies(notifies, added);
+    return status;
+}
+
+void
+present_destroy_notifies(present_notify_ptr notifies, int num_notifies)
+{
+    int i;
+    for (i = 0; i < num_notifies; i++)
+        present_free_window_notify(&notifies[i]);
+
+    free(notifies);
+}